Yokogawa GC1000 Mark II Process Gas Chromatograph - Manual (Page 9)

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<Toc> <Ind> <Rev> <Introduction>
IM 11B03A03-01E 3rd Edition : Aug. 23. 2006-00
CSA Type X purging and Explosionproof for CLI, DIV1, GPS B, C & D, NEMA3R.
Type Y purging and Type X purging for CLI, DIV1, GPS.B, C & D, NEMA3R.
• T1 (programmed-temperature oven 320˚C max., isothermal oven 225˚C max., liquid-
sample valve 250˚C max.)
• T2 (programmed-temperature oven 225˚C max., isothermal oven 225˚C max., liquid-
sample valve 225˚C max.)
• T3 (programmed-temperature oven 145˚C max., isothermal oven 145˚C max., liquid-
sample valve 145˚C max.)
• T4 (programmed-temperature oven 95˚C max., isothermal oven 95˚C max., liquid-
sample valve 95˚C max.)
(2) Precautions for Explosionproof section (The analyzer with optional
code "FM/CSA Type Y purging" does not have the explosionproof
section.)
When handling the screws on the cover of the Protection system, note the following to
avoid damaging the screws since they cannot be repaired.
(1) The enclosure is pressurized. Before removing the cover, reduce the internal pres-
sure by loosening the sealing plug for wiring on the enclosure or relevant means.
(2) When removing the cover, prevent any dirt or foreign matter from contaminating the
screw part.
(3) When installing the cover, tighten the screws by hand ; never use tools.
(4) Since the screws are coated with MOLYKOTE, do not lubricate them.
(3) Precautions when using hydrogen gas
When using hydrogen gas as the carrier gas, the FID or FPD combustion gas, to ensure
safety, install the analyzer in a location equipped with a ventilator or where there is suffi-
cient ventilation. Make sure there are no gas leaks from the pipe joints and inspect for
leaks.
(4) Installation site and environment
The analyzer specifications allow it to be used in hazardous areas as defined by Zone1 IIB
+ H
2
T
1
, T
2
, T
3
, T
4
(JIS / CENELEC) or DIV1, GPS B, C & D, T1, T2, T3, T4 (FM / CSA).
However, never install the analyzer in an area where the density of explosive gas persists
for a long time.
(5) Wiring works
Model GC1000D / GC1000S, analyzer obtains explosion proof authorization by the com-
plete set including metal fittings of the attachment.
When performing wiring, always use the attached sealing fittings and flameproof packing
adapter.